update NEWS for v1.3.7

diff --git a/NEWS b/NEWS
index 40805c187917d7a343866a3b93ed0a98efb9967c..fa1a2232511a3fc02ae63d356c0edc960884f4b6 100644 (file)
--- a/NEWS
+++ b/NEWS
@@ -1,3 +1,9 @@
+v1.3.7
+perf: slightly better decompression speed on clang (depending on hardware target)
+fix : performance of dictionary compression for small input < 4 KB at levels 9 and 10
+build: no longer build backtrace by default in release mode; restrict further automatic mode
+build: control backtrace support through build macro BACKTRACE
+
 v1.3.6
 perf: much faster dictionary builder, by @jenniferliu
 perf: faster dictionary compression on small data when using multiple contexts, by @felixhandte